IP pump adjustment question
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Junior User
Joined: Jan 2007
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From: Mooresville, NC
IP pump adjustment question
Sometime this week I am going to start installing my Banks turbo kit, question is this, it will be later in the week when I start the install and I want to go ahead and adjust my pump up 3 flats now for the turbo and I will have to drive my truck a couple of day's with just the pump turned up, will it hurt anything? I do not have my pyro installed yet but I will only be driving it less than 50 miles total and not be pulling a load, anyone think I will have a problem doing this?
Also is 3 flats about right?
Thanks, Rob
Also is 3 flats about right?
Thanks, Rob
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From: Troy MT
i would say 2.5-3 flats would be about right 3 if you really wanna smoke people out and 2 if you just want a little bit of smoke under load.
it wont hurt a thing unless you stomp the throttle and hold it there for a while, after i get my pyro in im going to turn mine up to about 2-2.5 flats.
it wont hurt a thing unless you stomp the throttle and hold it there for a while, after i get my pyro in im going to turn mine up to about 2-2.5 flats.
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2-3 flats make a N/A truck smoke like a steam train, I had mine up there for one day and for the 25 miles I drove the truck I outsmoked every vehicle on the road, including an oldschool Peterbilt tractor named "The Smoke House". Dunno what's the effect on EGTs, but it can't be good - just keep that in mind, you may be seeing high EGTs even under light load.
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From: Troy MT
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Junior User
Joined: Jan 2007
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From: Mooresville, NC
PLC,
The instructions do call for internal adjustment of the pump but they only give a 60 degree figure and that was where I was getting the 3 flats from, it does not say anything about an external adjustment, is there one there that I should do instead?
The instructions do call for internal adjustment of the pump but they only give a 60 degree figure and that was where I was getting the 3 flats from, it does not say anything about an external adjustment, is there one there that I should do instead?
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Postmaster
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60 degrees would be 1 flat, as in 1/6 turn = 1/6 of 360 degrees = 60 degrees. The external adjustment is on the back of the IP, right above the head where all the lines attach, and tis covered by a plastic cap. How you use that adjustment, I dunno.
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From: Nutter Fort, WV
The external screw is only on 92 and later IP's.
It is not the one down by the IP head.
In this picture the external screw is under the bottom of the h in shut.
Angled at about 45 degrees, brass screw with a lock nut around the outside.
What that screw does is set where the IP starts to deliver more fuel at RPM wise.
Hold the screw with a screw driver, loosen the nut, turn it out about 1/2 turn and tighten the locknut.
A pyrometer is a very good idea before any fuel adjustments are made.
Once you have one, you will really be surprised at how easy it is to raise the EGT, even at stock settings.
It is not the one down by the IP head.
In this picture the external screw is under the bottom of the h in shut.
Angled at about 45 degrees, brass screw with a lock nut around the outside.
What that screw does is set where the IP starts to deliver more fuel at RPM wise.
Hold the screw with a screw driver, loosen the nut, turn it out about 1/2 turn and tighten the locknut.
A pyrometer is a very good idea before any fuel adjustments are made.
Once you have one, you will really be surprised at how easy it is to raise the EGT, even at stock settings.
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From: Mooresville, NC
Could not see your picture Dave but what you are describing sounds about right, I will dig into it some more when I get home from work. By the way mine is a early 93 model. Would it be better to do the adjustment here or internally?
Thanks
Thanks
Post Fiend
Joined: Nov 2003
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From: Nutter Fort, WV
The internal screw only adjusts the max fuel delivery.
The external screw adjusts how much fuel at lower RPM's.
A balance of the two is best, between them you can keep black smoke to a minimum at all RPM's and have decent power.
The external screw adjusts how much fuel at lower RPM's.
A balance of the two is best, between them you can keep black smoke to a minimum at all RPM's and have decent power.